update README

README.en.md

@@ -19,7 +19,7 @@ dnf install dde-cliboard
 3. Select the destination to paste.
 4. Move the mouse to a certain area of the clipboard, click the upper **X** to delete the current content; click **Clear All** at the top to empty the clipboard.
 
-![image-20210812163615904](/home/wpeng/.config/Typora/typora-user-images/image-20210812163615904.png)
+![image-readme](./readme.png)
 
 #### Contribution
 

README.md

@@ -20,7 +20,7 @@ dnf install dde-cliboard
 3. 选择目标位置粘贴。
 4. 鼠标移入剪贴板的某一区块，单击上方的**X**，删除当前内容；单击顶部的**全部清除**，清空剪贴板。
 
-![image-20210812163545128](/home/wpeng/.config/Typora/typora-user-images/image-20210812163545128.png)
+![image-readme](./readme.png)